Magazine-camera



No. 619,695. Pelrenfd.Feb.` I4; |899. W. D. ROBINSON.

MAGAZINE CAMERA. (Application med Nov. 1, 1897A- (No Nludel.) 4 Sheets Sheet I.

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MAGAZINE GAMERA.

(Application med Nov. 1, 1897.).

4 Sheets-Sheet 2.

(No Model.)

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MAGAZINE CAMERA.

(Application lsd Nov. 1, 1897.) (No Nudel.)` 4 Sheets-Sheet 3.

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No. 6|9,695. Patented Feb. I4,` |899. W. D. ROBINSON.

MAGAZINE CAMERA.

(Application Bled Nov. 1, 1897.) (No Model.) 4 Sheets-Sheet 4.

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UNITED STATES PATENT OFFICE.

WILLIAM DUFFIELD ROBINSON, OF PHILADELPHIA, PENNSYLVANIA.

MAGAZIN E-CAM ERA.

SPECIFICATION forming part of yLetters Patent No. 619,695, dated February 14, 1899.

Application filed November 1, 1897. Serial No. 657,032. (No model.)

To all whom t may concern.-

Be it known that I, WILLIAM DUEEIELD ROBINSON, of Philadelphia, in the State of Pennsylvania,have invented certain new and useful Improvements in Cameras, whereof the following is a specification, reference being had to the accompanying drawings.

My invention relates to magazine-cameras adapted to contain a number of sensitized plates in two series or packs and comprising shifting mechanism operative by means of an exterior handle, whereby single plates may be simultaneously shifted from each of said series or packs to the other.

My invention comprises, first, plate-shifting mechanism of said type simple in construction and so disposed in the walls of the camera-box that the latter may be made yof minimum dimensions; second, a pile-covered roller which serves to prevent the ingress of light to the plate-magazine and facilitates the shifting of said plates in light-tight contact therewith; third, apeculiar form of plateholder, and other details of construction hereinafter s et forth.

In the drawings, Figure 1 is a side eleva-L tion of a camera, showing a convenient embodiment of my invention. Fig. 2 is a rear elevation of the camera shown in Fig. I with its rear door removed. Fig. 3 shows a central vertical section on the line 3 3 of Fig. 2. Fig. A shows a plan section on the line 4 4 of Figs. 2 and 3. Fig. 5 is a perspective View showing certain details of construction of the shifting mechanism. Fig. 6 is a perspective View of one of the plate-holders shown in section in Fig. 8.

In said iigures, A is the camera-box, provided with the focusing-tube B, which carries the lens O and is longitudinally adjustable in any convenient manner within the focusing-chamber BX. Behind said focusingchamber is the magazine-chamber D, adapted to contain a series of sensitive plates X in a pack in line with said lens O and a second series of sensitive plates X in a pack disposed above the first pack X. Each of said sensitive plates is conveniently mounted face outward in an open frame or holder X, hereinafter described.

The rear Wall of the chamber D and the camera-box A is formed as a removable door E, provided with suitable slide latches e, which serve to retain it normally in the position shown in Fig. 3 by engagement under the keeper-plates e', secured upon the box A.

f To maintain the sensitive plate-holders in proper relation with the shifting mechanism, it is desirable to provide the respective packs X and X with springs F and F, the former being secured at its end f upon the door E and serving to thrust the pack X forward, and the latter being secured at its end f upon the partition A in the camera-box A and serving to thrust the pack X' rearward.

Extending between the two compartments of the chamber D is a horizontal shaft G, provided with an exterior operating-handle GX. Upon said shaft G are fixed gear-wheels I-I H, respectively, existing within the opposite side walls A2 A2 of the camera-box.

Vertical channels A3 A3 and A4 A4 are provided in the side walls A2 as slideways for the racks I I and J J. Said racks are supported in the side walls A2 A2 behind the plates a2 d2, secured, respectively, upon the inner faces of said side walls. Said faceplates az a2 are provided with inwardly-projecting ribs a3 a3, which maintain the packs X and X' in the respective compartments of the chamber D and serve as bearings for the shaft G.

The opposed racks I I are coupled by means of a plate-shifting bar IX, pivotally mounted in the bearings it' in the upper extremities of said racks. The opposed racks J J are similarly coupled by means of a plate-shifting bar JX, pivotally mounted in bearings j j in the lower extremities of said racks. The respective pairs of coupled racks I and J are so mounted in engagement with the gear-wheels IAI II that rotation of the latter serves to shift the bars IX and JX vertically in parallelism. The normal position of the racks and shifting-bars is shown in Figs. l and 3. In said position the racks and bars are at the outer extremities of the respective channels A3 and A4, a single plate of the pack X in its holder a; being in line with the bar JX and a single plate of the pack X in its holder a: being in 'line with the bar IX.

The parts just described are retained in normal position by the detent-plate K, conveniently mounted upon the exterior of the IOO camera-box Ain position to engage the actuating-lever GX and prevent its rotation in the direction indicated by the arrow in Fig. l.

The plate-holders cc are preferably made of sheet metal and, as shown in Fig. (i, comprise a flat back fc', provided with forwardly-extending overhanging flanges t2 @c2 at t-heir opposite sides. The bottom flange 053 does not overhang the plate, but is returned upon itself, as shown in Fig. 3, thus serving as a stiifening-rib to maintain the back in plane. In operation the sensitized plates rest upon the lower flange w3 and are thrust forward in contact with the overhanging side iian ges c2 by flat springs 0;" ad, the latter being riveted at one extremity to the back as indicated at Fig. G. In the normal operation of the device all of the said holders c are filled with sensitized plates and placed in the chamber I), as shown in Fig. Said plates are then successively exposed at the front of the pack X, behind the lens C, and lifted thence to the pack X', as follows: 'Ihe exterior operatinglever GX is sprung outwardly from engagement with the detent-plate K and the shaft G and the gear-wheels II rotated in the direction of the arrow upon Fig. l. The resulting vertical movement of the bars .I X and IX serves to simultaneously shift the forward plate X and the rearward plate X, respectively, upward and downward, each into the other pack. Reverse movement of the operating-handle GX serves to return the bars IX and J X to their normal position. In order that said return movement of the bars may be effected, it is essential to provide means to temporarily retain the holders c out of the path of travel of the bars IX and J X against the action of the respective springs F and F. To effect this end the bars IX and J X are provided with lugs X and jX, which overlap the inner edges of the packs X and X' when the bars are in their inward position. In said position the outer edges of the packs are retained by the vertical knife-edged flanges Z and m of the springs L and M, which, however, are normally disengaged, as shown in Fig. 3, by means of their horizontal lugs Z and m', which extend in the path of travel of said bars. It is obvious that said mechanism may be used to shift said plates into any desired relation in the camerabox without exposure, so that when desired certain plates may be presented to the rear side of the box in convenient position for removal through the opening covered by the door E. To facilitate such manipulation of the plates, I prefer to provide a telltale or counter N upon the camera-box A, as indicated in Fig. l. Said counter comprises a toothed disk Qt, adapted to be engaged and shifted by the pivoted pawl a when the shaft G is rotated in the direction of the arrow upon Fig. l. In the reverse movement of said shaft and pawl the latter rides idly over the toothed disk a, rotation of the latter in reverse direction being prevented bythe keeperspring n2.

To prevent access of light from the focusing-chamber BX to the magazine-chamber D at the top of the forward plate X, I provide a roller O, covered with pile fabric 0 and mounted for rotation in the face-plates a2 a2. The pile of said fabric serves to exclude the light at the aforesaid junction, and the roller O serves to facilitate the vertical movement of the plates X.

As indicated in Fig. 3, the space forward of the chamber D in thc upper part of the camera-box may bc utilized to contain a finder AX.

I am aware that it is not broadly new to shift plates in a magazine-camera by means of racks actuated by gear-wheels. I therefore do not desire to broadly claim such construction. I believe it to be new, however, to combine racks and gear-wheels of the character described with the described form of shifting-bars, tbc. I therefore do not desire to limit myself to the precise construction which I have shown and described.

I claiml. In a camera, the combination with a magazine-chamber provided with means for supporting two packs of plates, of mechanism for simultaneously shifting one plate from each pack to the other pack, said mechanism com prising a rock-shaft, a gear-wheel upon said rock-shaft, racks in mesh with said gear-wheel, and plate-shifting bars, pivotally journaled in the outer extremities of said racks substantially as and for the purpose set forth.

2. In a camera, the combination with a magazine-chamber provided with means for supporting two packs of plates, of mechanism for simultaneously shifting one plate from each pack to the other pack, said mechanism comprising a rock-shaft, two gear-wheels upon said rock-shaft, respectively existing at opposite sides of said magazine-chamber, two racks in mesh with each of said gear-wheels, and two plate-shifting bars each pivotally journaled in two of said racks at their outer extremities, and extending transversely from side to side of said magazine-chamber, substantially as and for the purpose set forth.

3. In a camera, the combination with a magazine-chamber, provided with means for supporting two packs of plates, of mechanism for simultaneously shifting one plate from each pack to the other pack, said mechanism comprising a rock-shaft, a gear-wheel upon said rock-shaft, racks in mesh with said gearwheel, pivoted plate-shifting bars journaled in the outer extremities of said racks, and pack-retaining lugs upon said bars, substantially as and for the purpose set forth.

4. In a camera, the combination with a magazine-chamber provided with means for supporting two packs of plates, of mechanism for simultaneously shifting one plate from each pack to the other pack, said mechanism comprising a rock-shaft, a gear-wheel upon said rock-shaft, racks in mesh with said gearwheel, plate-shifting bars secured to the outer IOC IIO

Io members, comprising a roller mounted for rotation upon one of said members, and a pile covering for said roller adapted to Contact with the other of said members, and rotate in light-tight Contact therewith, substantially as and for the purpose set forth.

WM. DUFFIELD ROBINSON.

Witnesses:

C. H. EIMERMAN, A. E. PAIGE. 

